Google's 12th employee studied at San Jose State, then short stint at Hewlett-Packard. Stanford M.B.A., then startups 3DO, Go Corp. Was at Netscape when he met Sergey Brin and Larry Page in 1999. Googlers invited him over for Ping-Pong in a garage, then he bought dinner at a Chinese restaurant. Google's "business founder" joined fellow Netscaper and Google board member K. Ram Shriram in 1999. Now Iranian immigrant owns stake worth $500 million; Google shares down 30% in six months. Led $1.65 billion purchase of YouTube 2006. Divorce from wife Bita Daryabari finalized in August.